The products highlighted here exemplify OMNI Engineering, Inc.’s ability to manufacture multi part orders, with various process and quantities. These terminal, battery, board and interconnect contacts were precision stamped on high speed Bruderer presses with carbide progressive dies. Our production capacity allows for high volume stamping while holding very tight tolerances, in most cases tolerances of +/-0.0005”, and angular tolerances of +/- 1/2 degrees are achieved.

The base materials used for these electrical contacts range from beryllium copper, nickel silver, phosphor bronze, to brass. Various finishes are also required; the battery contacts are gold and tin plated, while the board contacts received a combination of gold, tin and matte tin plating, as well as nickel and electroplated nickel plating. The interconnect contacts required gold plating and bright 100% tin plating.

Maintaining quality for work with such a variety of specifications requires a robust quality program. All stamped components are subject to rigorous quality measures such as dimensional, camber, gage, visual, and gram force inspections, as well as use of our laser micrometer and our F.O.V. Smartscope (automated inspection system). The production process is monitored through the use of control logs and real time SPC data collection, with data supplied to the customer on every shipment.

We currently manufacture 50,000 to 500 million of these contacts in various configurations, with lead times of 2 to 4 weeks. For more information on these projects, or the processes used to manufacture them, see the table below or contact us directly.

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Custom Stamping Product Description

Electrical Contacts

Miniature / Micro Miniature Capabilities Applied / Processes

Miniature / Micro Miniature Stampings
Precision Stampings

Gold Plating
Tin Plating (Rohs Complaint)
Matte Tin Plating (Rohs Complaint)
Nickel Plating
Electroplated Nickel

Equipment used to Manufacture Part

22 & 30 Ton Bruderer Presses
Carbide Progressive Dies

Overall Part Dimensions

Thickness: 0.0050 – 0.010″
Width: 0.030″ to 0.619″
Length: 0.200 – 0.825″


Dimensional: +/-0.0005″
Angular: +/- ½°

Material Used

CA172 Beryllium Copper Alloy
C17410 Beryllium Copper Alloy
CA725 Nickel Silver Alloy
CA510 & CA521 Phosphor Bronze Alloy

In process testing / Inspection performed

F.O.V. Smartscope
Dimensional Inspection
Camber Inspection
Visual Inspection
Gage Inspection
Laser Micrometer
Real-time SPC Data Collection / Reporting

Industry for Use

Electronics Industry


50,000 – 500,000,000 annually

Delivery/Turnaround Time

Dependent on Material Availability

Delivery Location

United States
Central America

Standards Met

Customer Specifications
2D CAD Drawings
ASTM B-689
RoHS – REACH Compliant

Product Name

Battery Contacts
Board Contacts
Interconnect Contacts